Quantitave Phase Compositions Analysis of /3-Spodumene (Li20.Al203.4SiO2) Modified Al203-CaAl12O19 Composites Using the Rietveld Method  

Oleh:

Asmi, D. ; Low, I.M. ; O'Connor, B.

Jenis: Article from Journal - ilmiah nasional - tidak terakreditasi DIKTI
Dalam koleksi: SIGMA: Jurnal Sains dan teknologi vol. 10 no. 2 (Jul. 2007), page 119-125.
Topik: Rie Weld method; Al203-CaAl12O19 composites; Li20.AI203.4S102 (/3-spodumene); x-ray diffraction; reaction sintering

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: SS25.6 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

Lihat Detail Induk

Isi artikel

The analysis of x-ray diffraction (XRD) patterns using the Rie Weld method was tested to the quantitatively phase compositions of /3-spodumene (Li20.Al203.4SiO2) modified Al203-CaAl12O19 composites. It is clear that the addition of Li20.Al203.4SiO2 has significant effect on the phase composition of the Al203-CaAl12O19 composites as confirmed by XRD Rie Weld refinement analysis. The addition of> 2.5 wt % /3-spodumene caused the reduction of CaAl12O19 content and the formation of /3-quartz solid solution, which can be attributed due to the in-situ reaction sintering of alumina and Al203-CaAl12O19 precursor to form /3-spodumene modified Al203-CaAl12O19 composite as expected was not achieved. The refinement x-ray diffraction data analysis showed that the goodness of fit (GOF) values was re/at Wely low and the fluctuations in the difference plots showed a reasonable fit between the observed and the calculated plot.

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